Allium porrum Mid-season leek. Good disease resistance. Hybrid vigor and uniformity. Upright plants. Maturesin 90 days. Full sun. Mid-season leek that bulks up quickly and keeps its shape well without bulbing. Biker is a solid choice for high quality, reliability and disease resistance. Upright plants with a tight fan of dark green leaves are easy to manage. Intermediate resistance to Common Rust, Purple Blotch, White Tip Approx. 25 Seeds Start summer/fall harvest leeks 6-8 weeks before the last frost date, in flats indoors. Start winter harvest leeks indoors from March to mid-June. In mild winter areas, start them in a humus-rich nursery bed outside, and then transplant. Optimal soil temperature: 10-25C (50-75F). Seeds should sprout in 10-16 days. In flats: Sow seeds 5mm () deep, about 1cm () apart. Transplant when 20cm (8) tall. Space 20cm (8) apart in rows 45cm (18) apart. Rows can be as narrow as 20cm (8\”) if planting in raised beds or other situation where weeding will be simple.
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